Short-term repeatability of fractional exhaled nitric oxide (FENO) measurement in children

Introduction: F_ENO measurement has a very good repeatability in clinical setting. Less is known about F_ENO reproducibility in epidemiological studies. The aim of the study was to assess short-term repeatability of F_ENO levels and its correlates in children aged 6-9, participants in respiratory epidemiology survey. Methods: F_ENO was measured before spirometric test using portable device...